00777naa#a2200193#i#450# EN\\bibl\110142 20260111182913.7 2223-9987 20251215b2025####ek#y0engy0150####ca RU Justification for Protecting the Overhead Contact System of Urban Land Electric Transport from Low Short-Circuit Currents Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2025 8 с. Journal article local Релейная защита. Селективная защита. 621.316.925 Agunov Aleksandr Viktorovich Scherban' Aleksandr Vladimirovich Arhipov Dmitriy Dmitrievich itt-pgups.ru